Operation Manual
Table Of Contents
- Important information
- General information
- Getting to know the Octophon
- Basic functions
- Answering a call
- Switching from handset to speakerphone mode
- Switching from speakerphone mode to the handset
- Switching from headset to speakerphone mode
- Open listening
- Activating/deactivating the microphone
- Ending a call
- Group call for a team
- Listening to voicemail
- Making calls
- Redial
- Consulting a second party
- Call forwarding
- Calling back missed calls
- Programmable sensor keys
- Enhanced phone functions
- Phonebooks and call lists
- Privacy/security
- Individual phone configuration
- Web interface (WBM)
- Fixing problems
- Local user menu
- Index

Individual phone configuration
106
Step by step
Contrast for the Octophon F640 key module
If an Octophon F640 key module is connected to your
Octophon F640, you can set contrast for it.
N Press the key shown.
Select and confirm the option shown.
Select and confirm the option shown.
if nec.
j Enter and confirm the User password.
Select and confirm the option shown.
Select and confirm the option shown.
Select and confirm the option shown.
gh Set and confirm the contrast.
Confirm the option shown.
Settings
User
Phone
Display
Key mod. contrast
Save & Exit










